Properly run all CI tests for all crates instead of just the substrate-api-client

[clangenb]

As the root toml is both, a package toml and a workspace toml, the default behaviour for a command like cargo check --no-default-features is to execute it only for the package instead of the workspace. This became apparent when #848 move the substrate-api-client to a separate package, which made some of the CI tests fail.

[Niederb]

I will have a look at this